ŻOŁĄDEK, H. Classification of diffeomorphisms of $\mathbb S^4$ induced by queternionic Riccati equations with periodic coefficients. Topological Methods in Nonlinear Analysis, [S. l.], v. 33, n. 2, p. 205–215, 2009. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2009.014. Acesso em: 22 jul. 2024.